This is the nineteenth post in a monthlong series that started here. Each post will take about two minutes to read and may include an action item that takes the reader another two minutes to complete. I am writing this for an audience of people who know nothing about frequent flyer miles, and my goal is that by the end, you know enough to fly for free anywhere you want to go.

I've covered how to earn miles and the redemption options for miles.

Book any JetBlue award by 11:59 PM ET tomorrow (July 25, 2014) for travel from September 2 to October 31, 2014, and you'll get 20% of the points back in November or December 2014.

If you have Fall travel planned but not booked, this is a nice rebate.

You can transfer 250 Membership Rewards to 200 JetBlue points if you're short of the award you want.

JetBlue Mint Class is a fully enclosed suite between New York and Los Angeles, and New York and San Francisco starting October 26, 2014.

JetBlue has announced a 5x points promo on flights booked by Tuesday.

Ordinarily one earns 6 TrueBlue points per dollar on JetBlue bookings made online.

Edit: Airfare deals come and go quickly. This is dead. But type in your email address on the top left of the page for one, free daily email to your inbox with tips and tricks to travel cheap or free!

The offers for the cards listed in this post have also expired, so the links have been removed.

JetBlue is running an incredible (and incredibly limited) 80% off promotion from yesterday through February 1. Every day at noon ET, a few flights will be released with a promo code that will get you 80% off selected roundtrips for a very limited number of days.

Here were yesterday's routes: a mixture of JFK and LGA, international and domestic.

The dates are extremely limited, but the price is right. St.

I got an email today that flying three paid JetBlue roundtrips during 2013 will automatically earn a 5,000 point bonus.
The email says:
"Here’s something to celebrate: We’re giving 5,000 bonus points to every TrueBlue member who purchases and flies three roundtrip JetBlue flights in 2013. It’s that easy. That’s 5,000 extra points to use toward any seat, anytime, on any flight operated by JetBlue. Period."
I couldn't find any more information on the promo, but it sounds pretty clear: no registration, no hassle.

There's a very good JetBlue sale going on today and tomorrow: The Fly-Somewhere-New Sale.

JetBlue is running a winter sale for roundtrip tickets purchased by 11:59 PM ET tomorrow November 20.

For flights flown 11/27 to 12/20, you'll get 25% off the base fare with code WINTER25.

For flights flown 1/7 to 2/14, you'll get 20% off the base fare with code WINTER20.

For full details, head here.

To book, head here.

The discounts do not appear next to the flight times.

1) Yesterday's incredible JetBlue deal ends today at 11:59 PM ET. Anyone can get $100 off on a roundtrip fare and enjoy the best economy class in the US. I got a roundtrip from Burbank to Vegas for $25.

2) A reader passed along an email he got from TACA LifeMiles--and I got the same--saying that any activity in his LifeMiles account would result in a 500 mile bonus.